JP3793675B2 - Ozone deodorizer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ozone deodorizing apparatus that deodorizes based on reacting odor components in air with ozone.
[0002]
[Prior art]
Some of the ozone deodorizers have a configuration in which a blower and an ozone generator are arranged in a machine frame, air containing an odor component is sucked into the machine frame, and ozone is generated in the machine frame. In this configuration, an ozonolysis filter made of ceramics in the form of a honeycomb is disposed in the machine frame, odorous components react with ozone on the surface of the ozonolysis filter and deodorized, and residual ozone is removed from the ozonolysis filter. It is decomposed on the surface and clean air is discharged from the machine casing.
[0003]
[Problems to be solved by the invention]
In the case of the ozone deodorizing apparatus, the wall thickness of the cell portion of the ozone decomposition filter is as thick as several hundred μm or more, and the pressure loss in the ozone decomposition filter is large. For this reason, the ventilation capability was low and the deodorization efficiency was bad.
This invention is made | formed in view of the said situation, The objective is to provide the ozone deodorizing apparatus which has the outstanding deodorizing performance.
[0004]
[Means for Solving the Problems]
  The ozone deodorization apparatus according to claim 1, wherein a machine frame having an intake port and an exhaust port, a blower for sucking air from the intake port and discharging it from the exhaust port, and an ozone generator provided in the machine frame And provided in the machine frame on the downstream side of the ozone generator.A plurality of ozone decomposition filters arranged along a blowing direction of the blower through a gap, and the ones adjacent to the ozone generator among the plurality of ozone decomposition filters are composed of a honeycomb-shaped ceramic score, The remaining one of the plurality of ozonolysis filters has a configuration in which an ozonolysis catalyst is fixed to the surface of a honeycomb-shaped metal core.However, it has the characteristics.
  According to the above means, since the honeycomb-shaped metal core is used for the ozonolysis filter, the wall thickness of the cell portion can be made thinner than that of the ceramic ozonolysis filter. For this reason, the pressure loss at the ozonolysis filter is reduced, so the blowing capacity is increased.The And since the several ozone decomposition filter is arranged along the ventilation direction, the contact rate of an ozone decomposition filter and a strange odor component increases. Furthermore, since a turbulent flow is formed in the gap between the ozone decomposition filters, the mixing efficiency of the odor component and ozone is increased, and the deodorization performance is greatly improved as a whole. In addition, since the insulation performance between the ozone generator and the adjacent ceramic ozonolysis filter is improved, it is possible to prevent spark discharge and the like between them, and to obtain a stable discharge state with the ozone generator. .
[0009]
  Claim2In the ozone deodorizing apparatus described above, the air that has passed through the ozone generator is selectively flowed in both forward and reverse directions through the plurality of ozone decomposition filters, and the direction of ventilation with respect to the plurality of ozone decomposition filters is the start or stop of the deodorization operation. It is characterized in that it can be switched in conjunction with.
  According to the above means, one end of the ozone decomposition filter may be poisoned and deteriorated due to adsorption of odorous components when air flows in the forward direction to the ozone decomposition filter, but in the reverse direction to the ozone decomposition filter. Since one end of the ozonolysis filter is regenerated while air is flowing, deterioration of the ozonolysis filter is suppressed, and the lifetime of the ozonolysis filter is extended.
[0010]
  Claim3The ozone deodorizing apparatus described above is configured such that air flows in the forward direction from the intake port to the plurality of ozone decomposition filters through the ozone generator and exhausts from the exhaust port into the machine frame. A plurality of ozone decomposition filters provided with variable ventilation paths for switching the ventilation path between a state in which air flows in the opposite direction to the plurality of ozone decomposition filters via an ozone generator and exhausted from the exhaust port; The ventilation direction with respect to is characterized by being switched in conjunction with the start or stop of the deodorizing operation.
  According to the above means, ozone generators are individually arranged at both ends of the ozonolysis filter, and the air passing through the ozone generator is rotated based on the normal rotation of the blower in the operating state of one of the ozone generators. Since there is no need to flow the air through the ozone generator in the reverse direction based on the flow in the forward direction or the reverse of the blower in the operating state of the other ozone generator, the insulation structure for high voltage countermeasures is simple Just do it.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the present invention is applied to an ozone deodorizing apparatus for air purification installed in a room of a house, in a car, in a refrigerator, or in a toilet. First, in FIG. 1, a substantially L-shaped partition plate 2 is fixed in the machine casing 1. The partition plate 2 includes a machine room 3 that is horizontally long in the machine frame 1, a horizontally long ventilation path 4 that is located above the machine room 3, and a vertically long intake chamber 5 that is located to the right of the machine room 3 and the ventilation path 4. A fan motor 6 composed of an AC motor is fixed to the left end of the machine room 3. The fan motor 6 has a rotating shaft 7 extending in the vertical direction, and the rotating shaft 7 projects into the ventilation path 4.
[0017]
An exhaust port 8 is provided at the left end of the ventilation path 4. The exhaust port 8 has a short cylindrical shape (bell mouth shape) oriented in the vertical direction. An axial flow type fan 9 is connected to the rotary shaft 7 of the fan motor 6 and is located in the exhaust port 8. ing. Reference numeral 10 denotes a blower composed of a fan motor 6 and a fan 9.
[0018]
A rectifying plate 11 is fixed in the intake chamber 5. This rectifying plate 11 has a vertically long flat plate shape extending in the vertical direction, and a rectifying chamber 12 is formed in the right half of the intake chamber 5. An intake port 13 is provided on the right side wall of the intake chamber 5, and the intake port 13 has a louver shape that descends from the right toward the left.
[0019]
An electrical component storage unit 14 is provided in the machine room 3. The electrical component storage unit 14 stores electrical components such as a drive circuit (not shown) for applying drive power to the fan motor 6. When drive power is applied to the fan motor 6 from the drive circuit, The fan motor 6 is driven. Then, the air flows through the following path based on the rotation of the fan 9.
[0020]
<About air distribution channels>
(1) Air outside the machine casing 1 is sucked into the rectifying chamber 12 along the inclination of the air inlet 13 and collides with the rectifying plate 11.
(2) After the air flows downward in the rectifying chamber 12 along the rectifying plate 11, the air flows upward through a gap between the lower end portion of the rectifying plate 11 and the machine frame 1.
(3) Air flows from the right side to the left side in the ventilation path 4 and is discharged to the upper side of the machine frame 1 through the exhaust port 8. The arrow indicates the air flow.
[0021]
A transformer 15 is fixed to the right end portion in the machine room 3. The transformer 15 generates an AC high voltage for discharge from a commercial AC power source, and a creeping discharge type ozone generator 16 is electrically connected between both output terminals of the transformer 15. The ozone generator 16 is mainly composed of a pair of parallel electrode plates (not shown) fixed on the downstream side of the rectifying chamber 12, and a pair of parallel electrodes are connected from the transformer 15 in the operating state of the blower 10. When an alternating high voltage for discharge is applied between the plates, oxygen atoms are generated from oxygen molecules in the air, and ozone is generated based on the combination of oxygen atoms with oxygen molecules in the air.
[0022]
In the ventilation path 4, four ozone decomposition filters 17 are fixed in parallel along the flow direction of the outside air, and a gap having a width W of 1 mm is formed between the adjacent ozone decomposition filters 17. As shown in FIG. 2, each of these ozonolysis filters 17 includes a honeycomb-shaped aluminum metal core 18, a metal mesh 19 that covers both ends of the metal core 18 (only the metal mesh 19 at one end is shown), an oxidation It has a manganese-based ozone decomposition catalyst (not shown), and the ozone decomposition catalyst is attached to the surface of the hexagonal cylindrical cell portion extending in the length direction L of the metal core 18.
[0023]
  The shape of each metal core 18 is shown below.
    Length dimension L ...... 20mm
    Cell wall thickness ... 15μm
    Cell density ...... 25.4mm× 25.4mm350 pieces per
[0024]
A main switch (not shown) is mounted on the machine casing 1, and the main switch is electrically connected to a control device (not shown). This control device is mainly composed of a microcomputer. When the main switch is detected to be turned on, power is supplied to the fan relay coil and the transformer relay coil (both not shown) in that order.
[0025]
The contact of the fan relay and the contact of the transformer relay (both not shown) are interposed in the power supply path for the fan motor 6 and the power supply path for the transformer 15, and power is supplied to the coil of the fan relay and the coil of the transformer relay. Then, power is supplied to the fan motor 6 and the transformer 15 in the order based on the contact of the fan relay and the contact of the transformer relay being closed in the order. Then, the air blower 10 and the ozone generator 16 operate | move in the said order, and an ozone deodorizing driving | operation is started.
[0026]
When the ozone deodorizing operation is started, air flows through the above-described path, and ozone is generated by the ozone generator 16. Then, the ozone reacts with the odor components in the air on the surface of the ozone decomposition filter 17 to cause an oxidation reaction and decompose the odor components. At the same time, residual ozone that does not contribute to decomposition of odor components is decomposed into oxygen and carbon dioxide on the surface of the ozone decomposition filter 17, and clean air is discharged from the exhaust port 8.
[0027]
When the main switch is turned on during the ozone deodorizing operation, the control device disconnects the transformer relay coil and the fan relay coil in this order based on the main switch being turned on. Then, the contact of the transformer relay and the contact of the fan relay are turned off in the order, and the ozone deodorizing operation is stopped based on the fact that the operation of the transformer 15 and the fan motor 6 is stopped in the order.
[0028]
According to the first embodiment, since the honeycomb-shaped metal core 18 is used for the ozone decomposition filter 17, the wall thickness of the cell portion can be reduced as compared with the ozone decomposition filter using the honeycomb-shaped ceramic score. For this reason, since the pressure loss in the ozonolysis filter 17 becomes small, ventilation capability increases and deodorizing capability improves. In addition, since the wall thickness of the cell portion is set to 15 μm, the mechanical strength of the ozonolysis filter 17 can be sufficiently satisfied.
[0029]
Further, since the rectifying chamber 12 is provided in the machine casing 1 on the downstream side of the air inlet 13, the air flow is adjusted and the pressure loss is further reduced. For this reason, since ventilation volume increases further, deodorizing performance improves further.
[0030]
FIG. 3 shows the experimental results showing the relationship between the pressure loss (mmH2 O) and the wind speed (m / sec). The white square represents the metal ozone decomposition filter 17, and the black square represents the ceramic ozone. A decomposition filter is shown. As is apparent from FIG. 3, the metal ozone decomposition filter 17 has a pressure loss reduced by about 60 to 70% compared to the ceramic ozone decomposition filter, and the metal ozone decomposition filter 17 is made of ceramic. It can be seen that the air volume increases when used with the same pressure loss as the ozonolysis filter, and the noise decreases when used with the same air volume. The ceramic ozone decomposition filter used in the experiment has the same cell density as that of the metal ozone decomposition filter 17.
[0031]
Moreover, since the several ozone decomposition filter 17 was arranged along the ventilation direction of the air blower 10, the contact rate of the ozone decomposition filter 17 and a strange odor component increases. In addition, a gap is provided between the ozonolysis filters 17. For this reason, since a turbulent flow is formed in the gap and the mixing ratio of the odor component and ozone is increased, the deodorization performance is greatly improved as a whole. At the same time, since it is not necessary to perform a difficult operation for manufacturing a long honeycomb metal core, the manufacturing workability is also improved.
[0032]
Further, since the gap dimension W between the ozone decomposition filters 17 is set to a large “1 mm” so that the turbulent flow is efficiently generated and the pressure loss is effectively reduced, the deodorizing performance is set. Is further improved and the apparatus becomes compact.
[0033]
4 (a) shows the experimental results showing the relationship between the pressure loss (mmH2 O) and the gap dimension W (mm), and FIG. 4 (b) shows the deodorizing efficiency (%) and the gap dimension W (mm). It is an experimental result which shows the relationship. As is apparent from FIG. 4A, when the gap dimension W is “0 mm <W ≦ 5 mm”, the pressure loss is suppressed to 10% or less than that when the “width dimension W = 0”. In this case, as shown in FIG. 4B, it is found that a deodorization efficiency of 95% or more is obtained, and an excellent deodorization performance is obtained when the gap dimension W is set to 1 mm.
[0034]
Next, a second embodiment of the present invention will be described with reference to FIG. Almost the entire inner surface of the rectifying chamber 12 is coated with a manganese oxide-based particulate ozone decomposition catalyst 20 as indicated by hatching.
[0035]
According to the second embodiment, ozone that flows backward toward the air inlet 13 immediately after the ozone deodorizing operation is stopped or during a power failure is decomposed in the rectifying chamber 12, so that ozone leaks from the air inlet 13 to the outside. Is prevented. It has been experimentally confirmed that the ozone concentration outside the intake port 13 is as follows during 30 seconds when the ozone deodorizer is disconnected from the operating state.
When the above treatment is not performed: 0.04 ppm to 0.17 ppm
When the above processing is performed: Below the detection limit
[0036]
In the second embodiment, the ozone decomposition catalyst 20 is coated on the entire inner surface of the rectifying chamber 12. However, the present invention is not limited to this. For example, the ozone decomposition catalyst 20 is partially applied to the inner surface of the rectifying chamber 12. May be coated. In this case, it is preferable to coat the ozone decomposition catalyst 20 at the corners of the rectifying chamber 12 where ozone collides and stagnates during reverse flow.
[0037]
In the second embodiment, the inner surface of the rectification chamber 12 is coated with the ozone decomposition catalyst 20, but the present invention is not limited to this. For example, the inner wall of the rectification chamber 12 is formed of an ozone decomposition catalyst as a material. Also good.
[0038]
Next, a third embodiment of the present invention will be described with reference to FIG. Two partition plates 22 extending in the left-right direction are fixed in the machine casing 21. These partition plates 22 form a horizontally long first bypass ventilation path 23, normal ventilation path 24, and second bypass ventilation path 25 in the machine frame 21 in three vertical rows. A first damper 26 is attached to the right end of the shaft so as to be rotatable about a shaft 27. The first damper 26 is connected to a first damper motor (not shown), and between the standing state (see solid line) and the inverted state (see two-dot chain line) based on the driving of the first damper motor. Rotate.
[0039]
A second damper 28 is mounted on the left end of the normal ventilation path 24 so as to be rotatable about a shaft 29. The second damper 28 is connected to a second damper motor (not shown), and is driven between the inverted state (see the solid line) and the standing state (see the two-dot chain line) based on the driving of the second damper motor. Rotate.
[0040]
A third damper 30 is mounted on the right end of the normal ventilation path 24 so as to be rotatable about a shaft 31. The third damper 30 is connected to a third damper motor (not shown), and is driven between an inverted state (see solid line) and an upright state (see two-dot chain line) based on the driving of the third damper motor. Rotate.
[0041]
A fourth damper 32 is attached to the left end portion of the second bypass ventilation path 25 so as to be rotatable about a shaft 33. The fourth damper 32 is connected to a fourth damper motor (not shown), and between the standing state (see the solid line) and the inverted state (see the two-dot chain line) based on the driving of the fourth damper motor. Rotate.
[0042]
An intake chamber 34 is formed at the right end in the machine casing 21, and a louver-like intake port 35 is provided on the right side wall of the intake chamber 34. A transformer 15 is fixed in the intake chamber 34. An ozone generator 16 is electrically connected to the transformer 15, and the ozone generator 16 is mechanically fixed in the intake chamber 34.
[0043]
An exhaust chamber 36 is formed at the left end in the machine casing 21, and a bell mouth-shaped exhaust port 37 is provided on the left side wall of the exhaust chamber 36. The fan motor 6 of the blower 10 is fixed in the exhaust chamber 36, and the fan 9 of the blower 10 is accommodated in the exhaust port 37. Further, four metal ozone decomposing filters 17 are fixed in the normal ventilation path 24, and a gap with a width dimension W of 1 mm is formed between the ozone decomposing filters 17.
[0044]
The first damper motor to the fourth damper motor are electrically connected to the control device, and the control device performs the following ozone deodorization operation based on driving control of the first damper motor to the fourth damper motor. The following operation is performed by the control device based on a control program recorded in advance in the memory.
[0045]
<During normal operation>
When the control device detects that the main switch is turned on, as shown by the solid line, the control device turns the first damper 26 to the upright state and closes the right end portion of the first bypass ventilation path 23. Further, the second damper 28 is turned in an inverted state, and the left end portion of the first bypass ventilation path 23 and the left end portion of the normal ventilation path 24 are opened. Further, the third damper 30 is rotated in an inverted state, and the right end portion of the normal ventilation passage 24 and the right end portion of the second bypass ventilation passage 25 are opened. Moreover, the 4th damper 32 is rotated to an upright state, and the left end part of the 2nd bypass ventilation path 25 is closed.
[0046]
When the control device rotates the first damper 26 to the fourth damper 32, it drives the blower 10 and the ozone generator 16 in this order. Then, air outside the machine casing 21 is sucked into the intake chamber 34 through the intake port 35, passes through the four ozone decomposition filters 17 in the normal ventilation path 24 from right to left, and enters the exhaust chamber 36. And is discharged through the exhaust port 37. At this time, ozone is generated by the ozone generator 16, and the odor component is decomposed based on the adsorption of the odor component on the surface of the ozone decomposition filter 17. At the same time, residual ozone is decomposed on the surface of the ozone decomposition filter 17, and clean air is discharged from the exhaust port 37. The arrow A on the ozonolysis filter 17 indicates the forward flow of air during normal operation.
[0047]
<When the accumulated operation time exceeds the reference value>
The control device accumulates the operation time of the ozone generator 16 with a timer and records it in the memory. When it is detected that the accumulated time exceeds the reference value recorded in the memory in advance, the ozone generator 16 and the blower 10 are detected. Are stopped in this order. Then, the first damper motor to the fourth damper motor are driven and controlled while the deodorizing operation is interrupted, and the first damper 26 to the fourth damper 32 are rotated as indicated by the two-dot chain line. Hereinafter, operation states of the first damper 26 to the fourth damper 32 will be described.
[0048]
The control device rotates the first damper 26 in an inverted state to open the right end portion of the first bypass ventilation path 23. Further, the second damper 28 is turned upright so that the left end portion of the first bypass ventilation passage 23 is communicated with the left end portion of the normal ventilation passage 24. Further, the third damper 30 is rotated in the standing state so that the right end portion of the normal ventilation passage 24 is communicated with the right end portion of the second bypass ventilation passage 25. Further, the fourth damper 32 is rotated in an inverted state, and the left end portion of the second bypass ventilation path 25 is opened.
[0049]
When the control device rotates the first damper 26 to the fourth damper 32, the operation of the blower 10 and the ozone generator 16 is resumed in this order. Then, air outside the machine casing 21 is sucked into the intake chamber 34 through the intake port 35, flows from the right to the left in the first bypass ventilation path 23, and flows into the normal ventilation path 24 from the left end. . Then, it passes through the four ozone decomposition filters 17 based on the flow from the left to the right in the normal ventilation path 24, and flows into the second bypass ventilation path 25 from the right end. Thereafter, the gas flows in the second bypass ventilation path 25 from the right to the left and is discharged through the exhaust port 37.
[0050]
The arrow B on the ozonolysis filter 17 indicates the reverse flow of air when the accumulated operation time exceeds the reference value. Reference numeral 38 denotes a variable ventilation path including the first bypass ventilation path 23, the normal ventilation path 24, the second bypass ventilation path 25, and the first damper 26 to the fourth damper 32, As is clear from the above description, the variable ventilation path 38 is driven by the first damper motor to the fourth damper motor, and the air is supplied from the intake port 35 to the ozone decomposition filter 17 via the ozone generator 16 in the direction of arrow A. Between the state in which air is exhausted from the exhaust port 37 and the state in which air is passed from the air inlet 35 through the ozone generator 16 to the ozone decomposition filter 17 in the direction of arrow B and exhausted from the exhaust port 37. Is switched.
[0051]
According to the third embodiment, air that has passed through the ozone generator 16 was selectively allowed to flow through the ozone decomposition filter 17 in both directions of arrows A and B. For this reason, when air is flowing through the ozone decomposition filter 17 in the direction of arrow A, the left end portion of the ozone decomposition filter 17 may be poisoned and deteriorated due to adsorption of odorous components. Since the left end of the ozone decomposition filter 17 is regenerated while air is flowing in the direction, deterioration of the ozone decomposition filter 17 is suppressed, and the life of the ozone decomposition filter 17 is extended.
[0052]
In addition, a variable ventilation path 38 in which the ventilation path is switched between a state in which air flows in the direction of arrow A and a state in which air flows in the direction of arrow B is provided in the ozone decomposition filter 17. For this reason, the ozone generators 16 are individually arranged at the left and right ends of the normal ventilation path 24, and the ozone generation at the right end is generated based on the normal rotation of the blower 10 in the operating state of the ozone generator 16 at the right end. The air passing through the ozone generator 16 at the left end is flown in the direction of arrow A based on the flow of the air passing through the ventilator 16 in the direction of arrow A or the reverse of the blower 10 in the operating state of the ozone generator 16 at the left end. Since there is no need to flow through, the insulation structure for high voltage countermeasures can be simplified.
[0053]
Moreover, the ventilation direction with respect to the ozone decomposition filter 17 was switched based on the integration time of the deodorizing operation. For this reason, since the ozone decomposition filter 17 can be regenerated by deteriorating the ozone decomposition filter 17 due to the odor component within a predetermined range corresponding to the accumulated time of the deodorizing operation, the life of the ozone decomposition filter 17 is further increased.
[0054]
Moreover, when the ventilation direction with respect to the ozone decomposition filter 17 was switched from the arrow A direction to the arrow B direction, the blower 10 and the ozone generator 16 were stopped. For this reason, unlike the case where the ventilation direction is switched in the operating state of the blower 10 and the ozone generator 16, ozone is exhausted from the left end of the first bypass ventilation path 23 and the left end of the second bypass ventilation path 25. Leakage to the outside through 37 is prevented.
[0055]
In the third embodiment, the direction of ventilation with respect to the ozone decomposition filter 17 is switched from the direction of arrow A to the direction of arrow B based on the accumulated time of the deodorizing operation. However, the present invention is not limited to this. You may comprise like a modification 1> or a <modification 2>.
[0056]
<Modification 1>
Usually, a flow meter is disposed in the ventilation path 24. Based on the output signal from the flow meter, the integrated value of the ventilation rate for the ozone decomposition filter 17 is calculated and recorded in the memory of the control device. In this state, when the integrated value of the ventilation amount exceeds the reference value recorded in advance in the memory, the variable ventilation path 38 is driven, and the ventilation direction with respect to the ozone decomposition filter 17 is switched from the arrow A direction to the arrow B direction. In the case of this configuration, since the ozone decomposition filter 17 can be regenerated by stopping the deterioration of the ozone decomposition filter 17 within a predetermined range corresponding to the integrated value of the air flow rate, the life of the ozone decomposition filter 17 is further prolonged.
[0057]
<Modification 2>
The variable ventilation path 38 is driven every time the deodorizing operation is started based on the main switch being turned on or every time the deodorizing operation is stopped based on the main switch being turned on, and the ventilation direction with respect to the ozone decomposition filter 17 is changed to the arrow A direction → Switch alternately from arrow B direction to arrow A direction. In the case of this configuration, complicated processing for calculating the integrated time of the deodorizing operation and the integrated value of the ventilation amount is not required, so that the electrical configuration of the control device software and the like is simplified.
[0058]
In the first to third embodiments, all the four ozone decomposition filters 17 are made of metal. However, the present invention is not limited to this. For example, out of the four ozone decomposition filters 17, ozone is generated. The right end adjacent to the vessel 16 may be composed of only a honeycomb-like ozonolytic ceramic score.
[0059]
In the case of this configuration, one ozonolysis filter made of ceramics and three ozonolysis filters 17 made of metal are arranged in parallel to the blowing direction via a gap, so that the deodorization performance is improved. In addition, since the insulation performance between the ozone generator 16 and the adjacent ceramic ozone decomposition filter is improved and spark discharge or the like is prevented from occurring between them, the ozone generator 16 can stably discharge the discharge state. Is obtained. The spark discharge start voltage when using a metal ozonolysis filter 17 is 8.4 kV, whereas the spark discharge start voltage when using a ceramic ozonolysis filter may be 15 kV or more. It has been confirmed experimentally.
[0060]
Next, a fourth embodiment of the present invention will be described with reference to FIG. A foam cushioning material 39 based on EPDM (ethylene propylene diene rubber) is provided on the outer peripheral surface of each ozone decomposition filter 17, and the outer peripheral surface of each foam cushioning material 39 is the inner periphery of the ventilation path 4 in FIG. 1. It adheres to the surface or the inner peripheral surface of the normal ventilation path 24 of FIG.
[0061]
According to the fourth embodiment, the space between the ozone decomposition filter 17 and the ventilation path 4 or between the ozone decomposition filter 17 and the normal ventilation path 24 is closed by the foam cushioning material 39 made of EPDM. Since the foam cushioning material 39 made of EPDM has excellent ozone resistance, ozone may leak from the ozone decomposition filter 17 and the ventilation path 4 or between the ozone decomposition filter 17 and the normal ventilation path 24 for a long time. Is stably prevented. Moreover, since the foam cushioning material 39 made of EPDM is rich in elasticity, it is possible to fix the ozonolysis filter 17 without causing mechanical damage such as deformation or distortion.
[0062]
In addition, when the amount of ozonization catalyst falling off from the ozone decomposition filter 17 was experimentally compared with and without using the foam cushioning material 39, in the former case, the amount of omission was less than the weight weighing detection limit value. On the other hand, in the latter case, the amount was 20 to 30 mg with respect to one ozonolysis filter 17.
[0063]
In the first to fourth embodiments, the gap dimension W between the four ozone decomposition filters is set to 1 mm. However, the present invention is not limited to this, and a range of “0 mm <W ≦ 5 mm”. It is preferable to set within.
[0064]
In the first to fourth embodiments, the start and stop of the ozone deodorizing operation is executed based on the operation of the main switch. However, the present invention is not limited to this. For example, a start switch for starting the ozone deodorizing operation and A stop switch for stopping the ozone deodorizing operation may be provided individually.
[0065]
Moreover, in the said 1st thru | or 4th Example, although the four ozone decomposition filters 17 were arranged in the ventilation path 4 and the normal ventilation path 24, it is not limited to this, For example, 1-3 The ozone decomposing filters may be arranged, or five or more ozone decomposing filters 17 may be arranged.
[0066]
Moreover, in the said 1st thru | or 4th Example, although the ozone generator 16, the ozonolysis filter 17, and the air blower 10 were arrange | positioned in the said machine frame 1 or the machine frame 21 in the said order, it is limited to this. For example, the blower 10, the ozone generator 16, and the ozonolysis filter 17 may be arranged in this order. In this case, it is preferable to discharge air from the blower 10 toward the ozone generator 16 side.
[0067]
In the first to fourth embodiments, aluminum is used as the material of the metal core 18, but the material is not limited to this. For example, iron or the like may be used.
[0068]
In the first to fourth embodiments, the manganese oxide-based ozone decomposition catalyst is used. However, the present invention is not limited to this. For example, a lead oxide-based ozone decomposition catalyst may be used.
[0069]
Moreover, in the said 1st thru | or 4th Example, although the plate | board thickness of the cell part of the metal core 18 was set to 15 micrometers, it is not limited to this, It is good to set within the range of 10-20 micrometers.
[0070]
【The invention's effect】
  As is clear from the above description, the ozone deodorizing apparatus of the present invention has the following effects.
[0072]
  Claim1According to the described means, the honeycomb-shaped metal core is used for the ozonolysis filter, and the plurality of ozonolysis filters are arranged through the gap, so that the deodorization performance is greatly improved. In addition, since the ozone decomposition filter adjacent to the ozone generator is made of ceramics, it is possible to prevent a spark discharge or the like from occurring between them and to obtain a stable discharge state with the ozone generator.
  Claim2According to the described means, the air that has passed through the ozone generator is selectively allowed to flow through the ozone decomposition filter in both the forward and reverse directions, so that deterioration of the ozone decomposition filter is suppressed and the life of the ozone decomposition filter is extended.
  Claim3According to the described means, since the ventilation direction with respect to the ozonolysis filter is switched by the variable ventilation path, the insulation structure relating to the high voltage countermeasure can be simplified.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention (a diagram showing an internal configuration of an ozone deodorizing apparatus)
FIG. 2 is a perspective view showing a partially broken ozonolysis filter.
FIG. 3 is an experimental diagram showing the relationship between pressure loss and wind speed.
4A is a diagram experimentally showing the relationship between pressure loss and gap size, and FIG. 4B is a diagram experimentally showing the relationship between deodorization efficiency and gap size.
FIG. 5 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.
FIG. 6 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.
FIG. 7 is a diagram showing a fourth embodiment of the present invention (a diagram showing an ozonolysis filter).
[Explanation of symbols]
1 is a machine frame, 8 is an exhaust port, 10 is a blower, 12 is a rectifying chamber, 13 is an intake port, 16 is an ozone generator, 17 is an ozonolysis filter, 18 is a metal core, 21 is a machine frame, and 35 is an intake port , 37 is an exhaust port, 38 is a variable ventilation path, and 39 is a foam cushioning material.

Claims (3)

A machine frame having an intake port and an exhaust port;
A blower that sucks air from the intake port and discharges it from the exhaust port;
An ozone generator provided in the machine frame;
A plurality of ozone decomposition filters arranged in the machine frame on the downstream side of the ozone generator, and arranged in a gap along the blowing direction of the blower;
Among the plurality of ozonolysis filters, those adjacent to the ozone generator are composed of honeycomb-shaped ceramic scores,
The remaining one of the plurality of ozone decomposition filters has a configuration in which an ozone decomposition catalyst is fixed to the surface of a honeycomb-shaped metal core . In the plurality of ozonolysis filters, air passed through the ozone generator is selectively flowed in both forward and reverse directions,
The ozone deodorizing apparatus according to claim 1, wherein the ventilation direction for the plurality of ozone decomposition filters is switched in conjunction with the start or stop of the deodorizing operation . In the machine frame, air flows from the intake port through the ozone generator to the plurality of ozonolysis filters in the forward direction and exhausts from the exhaust port, and from the intake port through the ozone generator. A variable ventilation path is provided in which the ventilation path is switched between a state in which air is passed through the plurality of ozone decomposition filters in the opposite direction and exhausted from the exhaust port,
The ozone deodorizing apparatus according to claim 1, wherein the ventilation direction for the plurality of ozone decomposition filters is switched in conjunction with the start or stop of the deodorizing operation .

Images